public class DoubleArray {
    public static void main(String[] args) {
        int[] transform = {1, 2, 3};
        int n = transform.length;
        int i = 0;
        for( i = 0;i < n;i++){
            transform[i] = 2*transform[i];
        }
        i = 0;
        while (i < n){
            System.out.println(transform[i]);
            i++;
        }
    }
}
